GeForce 920M vs Mobility Radeon HD 3870 X2

If you are going to buy a new graphics card and are choosing between GeForce 920M and Mobility Radeon HD 3870 X2, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce 920M stacks up against Mobility Radeon HD 3870 X2, check out specs charts below.

GeForce 920M and Mobility Radeon HD 3870 X2 are Laptop Graphics Cards

Note: GeForce 920M and Mobility Radeon HD 3870 X2 are only used in laptop graphics. They have lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce 920M or Mobility Radeon HD 3870 X2 here:

Main Specs

  GeForce 920M Mobility Radeon HD 3870 X2
Power consumption (TDP) 33 Watt 110 Watt
Interface PCIe 3.0 x8 PCIe 2.0 x16
Memory type DDR3 GDDR3
Maximum RAM amount 4 GB 512 MB
Display Connectors No outputs No outputs
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  • Mobility Radeon HD 3870 X2 has 233% more power consumption, than GeForce 920M.
  • GeForce 920M is connected by PCIe 3.0 x8, and Mobility Radeon HD 3870 X2 uses PCIe 2.0 x16 interface.
  • Mobility Radeon HD 3870 X2 has 508 GB more memory, than GeForce 920M.
  • Both cards are used in Laptops.
  • GeForce 920M is build with Kepler architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
  • Core clock speed of GeForce 920M is 294 MHz higher, than Mobility Radeon HD 3870 X2.
  • GeForce 920M is manufactured by 28 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 nm process technology.
  • Memory clock speed of GeForce 920M is 950 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 0−1 6−7
ultra / 1080p 4−5
QHD / 1440p 0−1 0−1
low / 720p 1−2 16−18
medium / 1080p 0−1 8−9
The average gaming FPS of Mobility Radeon HD 3870 X2 in Assassin's Creed Odyssey is 1600% more, than GeForce 920M.

Full Specs

  GeForce 920M Mobility Radeon HD 3870 X2
Architecture Kepler RV6xx
Code name N16V-GM-S M88-XT CF
Type Laptop Laptop
Release date 27 January 2015 1 September 2008
Pipelines 384 640
Core clock speed 954 MHz 660 MHz
Transistor count 915 million 666 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 30.53 10.56
Floating-point performance 297.6 gflops 2x 422.4 gflops
Memory bus width 64 Bit 256 Bit
Memory clock speed 1800 MHz 850 MHz
Memory bandwidth 14.4 GB/s 54.4 GB/s
Shared memory - -
DirectX 12 (11_0) 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.5 3.3
OpenCL 1.2 N/A
Vulkan 1.1.126 N/A
CUDA +
Bus support PCI Express 3.0
Bitcoin / BTC (SHA256) 40 Mh/s
Laptop size large
Optimus +
GPU Boost 2.0
GameWorks +
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